Dietary oregano aqueous extract improves growth performance and intestinal health of broilers through modulating gut microbial compositions

Table 1 Ingredients and nutrients composition of Exp. 1 diets

Ingredients, %	Starter	Finisher
Corn	54.99	67.64
Soybean meal	28.16	17.40
Corn DDGS	8.00	-
Cottonseed meal	4.00	5.00
Corn gluten meal	-	5.00
Soybean oil	0.50	1.17
Mountain flour	1.57	1.24
Calcium hydrophosphate	1.27	1.26
L-lysine hydrochloride	0.36	0.45
DL-methionine	0.27	0.16
NaCl	0.54	0.26
Mineral premix^a	0.15	0.15
L-threonine	0.09	0.07
Choline chloride	0.08	0.08
Vitamin premix^b	0.02	0.02
L-tryptophan	-	0.11
Phytase	0.02	0.02
Total	100.00	100.00
Nutritional level^c, %
Apparent metabolizable energy, kcal/kg	2,673.00	2,922.00
Dry matter	86.41	86.27
Crude protein	21.00	18.50
Crude fat	3.24	3.84
Crude ash	6.26	5.10
Calcium	1.00	0.85
Total phosphorus	0.65	0.58
Available phosphorus	0.34	0.29
Lysine	1.20	1.04

^aMineral premix provided the following per kg of the diet: Mn, 95.4 mg; I, 0.38 mg; Fe, 66 mg; Cu, 15 mg; Zn, 96.6 mg; Se, 0.41 mg
^bVitamin premix provided the following per kg of the diet: vitamin A, 9,200 IU; vitamin D, 3,000 IU; vitamin E, 38 mg; vitamin K₃, 3 mg; vitamin B₁, 3 mg; vitamin B₂, 10 mg; vitamin B₆, 5 mg; vitamin B₁₂, 0.04 mg; niacin, 40 mg; D-calcium pantothenate, 16 mg; folic acid, 2 mg; biotin, 0.3 mg
^cThe nutrient levels were calculated values

ISSN: 2049-1891